CN111550955A - Temperature monitoring system - Google Patents
Temperature monitoring system Download PDFInfo
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- CN111550955A CN111550955A CN202010357666.8A CN202010357666A CN111550955A CN 111550955 A CN111550955 A CN 111550955A CN 202010357666 A CN202010357666 A CN 202010357666A CN 111550955 A CN111550955 A CN 111550955A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
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Abstract
The invention discloses a temperature monitoring system, which comprises: a power supply module; the temperature sensor control module comprises a temperature sensor and a sensor control interface, and the temperature sensor is used for acquiring an ambient temperature value of the direct imaging equipment; the main control module is connected with the power supply module and the sensor control interface and used for outputting a temperature adjusting instruction when the environment temperature value is determined to exceed the working temperature value range of the direct imaging equipment; the communication module comprises a first communication control interface, and one end of the first communication control interface is connected with the main control module; and the temperature adjusting device is connected with the other end of the first communication control interface and used for receiving the temperature adjusting instruction and adjusting the environmental temperature value according to the temperature adjusting instruction. The system can meet the requirement of temperature control of the direct imaging device.
Description
Technical Field
The invention relates to the technical field of imaging, in particular to a temperature monitoring system.
Background
Laser Direct Imaging (LDI) is a technique for imaging a pattern on a printed circuit board coated with a photoresist by an imaging device such as a Laser, a digital micromirror device, and an optical path according to Image data output from a workstation.
One of the core components of the LDI equipment is a high-precision motion platform, along with the high-speed development of the precision machining technology, the requirement on the precision positioning technology is higher, the temperature is one of the main factors influencing the positioning precision of the motion platform, and therefore, a good temperature monitoring system is needed to ensure the stable and reliable work of the precision motion platform. And the other core component of the LDI equipment is a graph imaging device which mainly comprises a laser, a digital micro-mirror device, an optical light path and the like, and in order to ensure that the graph imaging device can work stably and reliably, the temperature of the working environment of the graph imaging device also needs to be monitored and controlled in real time.
However, due to the limitation of the application field and the particularity of the internal structure of the LDI device and its working environment, it is difficult to find a completely matched temperature monitoring system in the market considering the use cost. In addition, the outsourced temperature monitoring system is not well applicable to the environment adjusting system matched with the LDI equipment due to the constraint of poor secondary development.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. To this end, an object of the present invention is to provide a temperature monitoring system that can satisfy the demand for temperature control of a direct imaging apparatus.
The temperature monitoring system provided by the embodiment of the invention is used for direct imaging equipment, and comprises: a power supply module; the temperature sensor control module comprises a temperature sensor and a sensor control interface, and the temperature sensor is used for acquiring an ambient temperature value of the direct imaging equipment; the main control module is connected with the power supply module and the sensor control interface and used for outputting a temperature adjusting instruction when the environment temperature value is determined to exceed the working temperature value range of the direct imaging equipment; the communication module comprises a first communication control interface, and one end of the first communication control interface is connected with the main control module; and the temperature adjusting device is connected with the other end of the first communication control interface and used for receiving the temperature adjusting instruction and adjusting the environmental temperature value according to the temperature adjusting instruction.
According to the temperature monitoring system provided by the embodiment of the invention, the temperature sensor control module is used for acquiring the environment temperature value of the direct imaging device, and when the environment temperature value exceeds the working temperature value range of the direct imaging device, the main control module is used for outputting the temperature adjusting instruction to the temperature adjusting device so as to adjust the temperature of the environment of the direct imaging device, so that the device is restored to the temperature range in normal use, the requirements of temperature monitoring and adjustment of the direct imaging device are met, and the operation is simple.
In some embodiments, the direct imaging apparatus comprises a motion stage and a graphic imaging device, the temperature sensor comprising: the first temperature acquisition module is arranged near the motion platform, connected with the main control module and used for acquiring a first environment temperature value; and the second temperature acquisition module is arranged in the optical path optical engine cover of the image imaging device, is connected with the main control module and is used for acquiring a second environment temperature value.
In some embodiments, the temperature monitoring system further comprises a touch screen, the touch screen is connected with the main control module, the touch screen is provided with a parameter setting unit, a temperature checking unit and a humidity checking unit, wherein the parameter setting unit is used for controlling the touch screen to provide a password verification interface and a parameter setting interface according to a parameter setting instruction so as to set a control parameter; the temperature viewing unit comprises a plurality of temperature viewing selection subunits, and the temperature viewing selection subunits are used for controlling the touch screen to provide temperature data with different time lengths according to a temperature viewing instruction; the humidity checking unit comprises a plurality of humidity checking and selecting subunits, and the humidity checking and selecting subunits are used for controlling the touch screen to provide humidity data with different durations according to a humidity checking instruction.
In some embodiments, the temperature monitoring system further comprises: and the state display module is connected with the main control module and is used for prompting the temperature range of the environmental temperature value in different colors.
In some embodiments, the status display module comprises: the prompting lamp and the alarm buzzer are both connected with the main control module; when the environment temperature value is in a first temperature range, the prompting lamp prompts in a first color, and the alarm buzzer gives an alarm; or, when the ambient temperature value is in the second temperature range, the prompting lamp prompts with a second color, and the alarm buzzer gives an alarm, or when the ambient temperature value is in the working temperature value range of the direct imaging device, the prompting lamp prompts with a third color.
In some embodiments, the temperature monitoring system further comprises a data storage module connected to the main control module, the data storage module comprising: an EEPROM (Electrically-Erasable Programmable Read-only memory) storage unit for storing setting parameters and communication parameters; and the Flash storage unit is used for storing the acquisition parameters of the temperature sensor.
In some embodiments, the communication module further includes a second communication control interface, one end of the second communication control interface is connected to the main control module, and the other end of the second communication control interface is connected to an upper computer.
In some embodiments, the communication module further comprises: and the networking communication control interface is used for realizing the communication connection of the networking temperature monitoring of the plurality of direct imaging devices.
In some embodiments, the power supply module comprises: the power supply circuit is connected with the main control module and used for supplying power to the temperature monitoring system; and the power supply reverse connection preventing circuit is connected with the power supply circuit and used for closing the output of the power supply circuit when the power supply is reversely connected.
In some embodiments, when outputting the temperature adjustment instruction to control the temperature adjustment device, the main control module is configured to control the temperature adjustment device according to an ambient temperature value at which the direct imaging device is located and a set temperature value, so as to quickly adjust the ambient temperature to a target temperature range, and adjust the ambient temperature to the set temperature value in the target temperature range by using a pid (proportion integration differential) algorithm.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a temperature monitoring system according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection between a temperature sensor and a master control module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the connection of a communication module according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of a connection between a data storage module and a master control module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a connection between a touch screen and a main control module according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a connection between a status display module and a main control module according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a communications module networking connection according to one embodiment of the present invention;
FIG. 8 is a flow chart of the operation of a temperature monitoring system according to one embodiment of the present invention.
Reference numerals:
a temperature monitoring system 10;
a power supply module 1; a temperature sensor control module 2; a main control module 3; a communication module 4; a temperature adjusting device 5; a touch screen 6; a status display module 7; a data storage module 8;
a temperature sensor 21; a first temperature acquisition module 211; a second temperature acquisition module 212;
a first communication control interface 41; a second communication control interface 42; an upper computer 9;
an EEPROM memory unit 81; a Flash storage unit 82;
a parameter setting unit 61; a temperature viewing unit 62; a humidity check unit 63;
a warning light 71; an alarm buzzer 72;
a networking communication control interface 43.
Detailed Description
Embodiments of the present invention will be described in detail below, the embodiments described with reference to the drawings being illustrative, and the embodiments of the present invention will be described in detail below.
In order to solve the above-described problems, a temperature monitoring system according to an embodiment of the present invention, which can satisfy the requirement for temperature control of a direct imaging apparatus, is described below with reference to the accompanying drawings.
As shown in fig. 1, a temperature monitoring system 10 according to an embodiment of the present invention includes a power supply module 1, a temperature sensor control module 2, a main control module 3, a communication module 4, and a temperature adjustment device 5.
The temperature sensor control module 2 comprises a temperature sensor and a sensor control interface, wherein the temperature sensor is used for acquiring an ambient temperature value of the direct imaging device; the main control module 3 is connected with the power supply module 1 and the sensor control interface and is used for outputting a temperature adjusting instruction when determining that the ambient temperature value exceeds the working temperature value range of the direct imaging equipment; the communication module 4 comprises a first communication control interface 41, and one end of the first communication control interface 41 is connected with the main control module 3; the temperature adjusting device 5 is connected to the other end of the first communication control interface 41, and is configured to receive a temperature adjusting instruction and adjust an ambient temperature value according to the temperature adjusting instruction.
In the embodiment, because some internal structures in the direct imaging device, such as internal structures of a motion platform, an optical light path, and the like, have strict requirements on the working temperature, the temperature monitoring system 10 according to the embodiment of the present invention monitors the ambient temperature value of the internal mechanism of the direct imaging device in real time by installing the temperature sensor control module 2 at the temperature control test point of the internal mechanism, and sets the temperature adjusting device 5 to adjust the ambient temperature value of the internal mechanism, and uses the main control module 3 as the core module of the temperature monitoring system 10, and the main control module 3 is connected with other functional components of the temperature monitoring system 10 through a control cable, so as to implement the requirements on monitoring and adjusting the temperature of the environment of the direct imaging device through function control and data communication, and improve the stability of the operation of the device.
When the temperature monitoring system 10 is operated, the power supply module 1 supplies power to the temperature monitoring system 10, and after the temperature monitoring system 10 is started, the temperature sensor control module 2 monitors the temperature of the environment and transmits the environment temperature value acquired in real time to the main control module 3 through the sensor interface, then the main control module 3 judges the collected environmental temperature value to determine whether the environmental temperature value is within the allowable working temperature range of the direct imaging device, and outputs a temperature adjusting instruction when the environmental temperature value exceeds the working temperature value range of the direct imaging equipment, the communication module 4 further transmits the temperature adjustment instruction to the temperature adjustment device 5, and in response to the temperature adjustment instruction, the temperature adjustment device 5 adjusts the temperature of the environment in which the direct imaging apparatus is located, so that the equipment is restored to the temperature range of normal use, thereby ensuring the stability of the operation of the equipment.
In an embodiment, the temperature sensor in the temperature sensor control module 2 may adopt a sensor having a function of collecting temperature data and humidity data, and may adopt sensors with different temperature and humidity accuracies according to the requirements of the temperature monitoring system 10, for example, a temperature and humidity sensor SHT15 may be adopted, the temperature measurement accuracy is ± 0.3 ℃, and the humidity measurement accuracy is ± 2.0% RH, and since the normal operating temperature of the direct imaging device is 22 ± 0.5 ℃, the temperature and humidity sensor may meet the temperature collection requirements of the device. And the sensor control interface of the temperature sensor control module 2 exchanges commands and data with the main control module 3 by a specific sensor communication protocol.
In an embodiment, the main control module 3 may set a sampling period, and transmit the sampling period to the temperature sensor control module 2 through the sensor control interface, so that the temperature sensor performs data acquisition according to the sampling period set in advance, and continuously feeds back acquired temperature and humidity data to the main control module 3.
In an embodiment, a core Controller adopted by the main control module 3 may adopt a single chip microcomputer or a PLC (programmable logic Controller), and the like, and the written logic control code may be written into the core Controller to complete logic control of the entire system. For example, the core controller of the main control module 3 may adopt an STM32F103CBT6 chip, and the main functional parameters of the chip are that the highest working frequency is 72MHz, a flash rom with 64KB, an SRAM (static random-access memory) with up to 20KB, contains 4 timers, a 2-way SPI interface, a 2-way IIC interface, a 3-way rt usal interface, and a 37-way general GPIO interface.
In an embodiment, the temperature adjusting device 5 includes a water cooler, and when the ambient temperature value exceeds the range of the working temperature value of the direct imaging device, the water cooler controls the temperature of the circulating water to be adjusted up or down according to the received temperature adjusting instruction, and then, in combination with other modules of the temperature monitoring system 10, the purpose of effectively controlling the ambient temperature of the device is achieved.
According to the temperature monitoring system 10 of the embodiment of the invention, the temperature sensor control module 2 is used for acquiring the ambient temperature value of the direct imaging device, and when the ambient temperature value exceeds the working temperature value range of the direct imaging device, the main control module 3 is used for outputting the temperature adjusting instruction to the temperature adjusting device 5 so as to adjust the temperature of the environment of the direct imaging device, so that the device is restored to the temperature range in normal use, the requirements of temperature monitoring and adjustment of the direct imaging device are met, and the operation is simple.
In the embodiment, when the main control module 3 outputs the temperature adjustment instruction to control the temperature adjustment device 5, the main control module is further configured to control the temperature adjustment device 5 according to the ambient temperature value and the set temperature value where the direct imaging device is located, so as to quickly adjust the ambient temperature to the target temperature range, and adjust the ambient temperature to the set temperature value in the target temperature range by using a PID algorithm.
For example, when the temperature of the system fluctuates and is calculated by the PID algorithm, the main control module 3 sends a temperature adjustment command to the temperature adjustment device 5 through the first communication control interface 41, and if the set target temperature range is 22 ± 0.5 ℃, and the range of 20 ℃ to 24 ℃ belongs to the PID adjustment range, the temperature range outside the set target temperature range is a rapid temperature adjustment range, and in order to maintain the stability of the system, the main control module 3 calculates the average value of the temperature data after acquiring 12 sets of temperature data. If the ambient temperature value exceeds 24 ℃, the main control module 3 sends a command through the first communication control interface 41 to set the set temperature value of the temperature adjusting device 5 to be 16 ℃, so that the temperature inside the equipment is quickly reduced through the temperature adjusting device 5; if the ambient temperature value is lower than 20 ℃, the main control module 3 sends a command through the first communication control interface 41 to set the set temperature value of the temperature adjusting device 5 to be 22 ℃, so that the temperature inside the equipment is rapidly increased through the temperature adjusting device 5; if the ambient temperature value is within the range of 20-24 ℃, a variable speed integral PID temperature control algorithm is involved, so that the ambient temperature value of the equipment is finely adjusted, a PID algorithm function is called, a set temperature value of the temperature adjusting device 5 is obtained, the set temperature value is sent to the temperature adjusting device 5 through the first communication control interface 41, the temperature adjusting device 5 controls the circulating water temperature to be adjusted upwards or downwards according to a received command, and finally, other modules are matched to effectively control the ambient temperature.
Therefore, the main control module 3 of the embodiment of the invention adopts a variable speed integral PID control algorithm, thereby eliminating integral saturation, reducing overshoot, quickly and effectively adjusting the ambient temperature in real time and improving the stability of the system.
In an embodiment, the direct imaging apparatus comprises a motion platform and a graphic imaging device, as shown in fig. 2, the temperature sensor 21 comprises a first temperature acquisition module 211 and a second temperature acquisition module 212.
Specifically, the first temperature acquisition module 211 is disposed near the motion platform, connected to the main control module 3, and configured to acquire a first ambient temperature value; the second temperature acquisition module 212 is disposed in the optical path optical engine cover of the image forming apparatus, and is connected to the main control module 3 for acquiring a second ambient temperature value. That is, the temperature sensor 21 is composed of a first temperature collection module 211 and a second temperature collection module 212, which are respectively used for collecting temperature changes near the motion platform and temperature changes inside the optical-mechanical housing of the optical path, and the two temperature collection modules are respectively connected with the main control module 3 through respective communication cables, and the main control module 3 is respectively in data communication with the two temperature collection modules through two-wire bidirectional serial interfaces, when the temperature monitoring system 10 operates, the main control module 3 processes collected temperature and humidity data according to a set sampling period, for example, at a time interval of 2 seconds, and adjusts the ambient temperature of the device in real time through a PID algorithm according to real-time temperature data as a reference.
In an embodiment, as shown in fig. 3, the communication module 4 further includes a second communication control interface 42, one end of the second communication control interface 42 is connected to the main control module 3, and the other end of the second communication control interface 42 is connected to the upper computer 9. The communication module 3 is composed of two communication control interfaces for data interaction, for example, the communication control interface can adopt an RS485 communication interface with good anti-interference performance, and the data feedback form can be active data feedback, or data feedback after receiving a read command, so as to meet different data acquisition requirements, and facilitate collection, sorting, and statistical analysis of temperature and humidity data.
Specifically, the second communication control interface 42 is configured to transmit data acquired by the temperature sensor control module 2 to the upper computer 9 in an active transmission manner or a passive feedback manner, so as to facilitate collection, sorting, statistical analysis of temperature and humidity data of the device, and meanwhile, the configuration parameters or PID control parameters of all the communication interfaces can be directly modified on line through the second communication control interface 42, so as to facilitate debugging of the temperature monitoring system 10 through the upper computer 9; and the first communication control interface 41 is used for sending a temperature adjusting command in due time according to a PID control algorithm and controlling the temperature adjusting device 5 which mainly comprises a water cooler to quickly adjust the ambient temperature.
In an embodiment, the communication module 4 may use an ISL83483 chip to receive or transmit data.
It should be noted that the upper computer 9 includes, but is not limited to, a control device such as an industrial personal computer, a PLC (Programmable logic controller), and the like, and is configured to perform statistical processing on the temperature and humidity data output by the temperature monitoring system 10, form a work log, and store the work log, so as to perform subsequent data analysis, and the upper computer 9 is further configured to perform online adjustment on system parameters.
In an embodiment, referring to fig. 1 and 4, the temperature monitoring system 10 of the embodiment of the present invention further includes a data storage module 8 connected to the main control module 3. The data storage module 8 includes an EEPROM storage unit 81 and a Flash storage unit 82. The EEPROM storage unit 81 is configured to store setting parameters and communication parameters; the Flash storage unit 82 is used for storing the acquisition parameters of the temperature sensor.
Specifically, the data storage module 8 is composed of an EEPROM storage unit 81 and a Flash storage unit 82, which are connected to a core controller of the main control module 3 through respective read-write control interfaces, wherein the EEPROM storage unit 81 performs command and data exchange with the main control module 3 by using a specific communication protocol, and is used to store data such as a target set temperature of the system, PID control parameters, configuration parameters of the RS485 communication interface, and the like, so as to ensure that all previously configured parameters are not lost after the system circuit is powered off. And the Flash storage unit 82 adopts a specific communication protocol to exchange commands and data with the main control module 3, and is used for storing temperature and humidity data recently acquired by the system, and can feed acquisition parameters back to the upper computer 9 according to the specific communication protocol, the upper computer 9 can store the received data for subsequent calling, and the data stored by the Flash storage unit 82 can also be read in batch through the communication module 4, so that even when the control of the upper computer 9 is separated, the temperature monitoring system 10 can still independently run and store important data, and the flexibility of the system use is improved.
In an embodiment, the EEPROM storage unit 81 may adopt an AT24C02 chip, a communication mode between the EEPROM storage unit 81 and the main control module 3 is IIC, a storage capacity is 2Kbit, and storage of basic parameter data of the temperature sensor control module 2 can be satisfied, and the upper computer 9 or the touch screen 6 may modify the storage parameter of the EEPROM storage unit 81 through respective communication interfaces, and the EEPROM storage unit 81 is used as a storage carrier of important system parameters, and the stored data is not lost due to system power failure, so that the temperature monitoring system 10 may read configuration parameters of the system from the EEPROM storage unit 81 after each power-on to ensure stable operation of the system. And the Flash storage unit 82 can adopt a W25Q64 chip, the Flash storage unit communicates with the main control module 3 through an SPI interface, the storage capacity is 64Mbit, the long-term storage of the data acquired by the temperature sensor control module 2 can be met, the longest storage time is 3 months, and the upper computer 9 can read the data stored in the Flash storage unit 82 through the communication module 4 in real time, so that the long-term monitoring of the operation stability of the system is facilitated.
In an embodiment, referring to fig. 1 and fig. 5, the temperature monitoring system 10 according to the embodiment of the present invention further includes a touch screen 6, where the touch screen 6 is connected to the main control module 3, and the touch screen 6 is provided with a parameter setting unit 61, a temperature viewing unit 62, and a humidity viewing unit 63.
In an embodiment, the touch screen 6 and the main control module 3 may be connected through an RS232 control interface to perform data communication. That is, the touch screen 6 sends a data request command to the main control module 3 through the RS232 serial port, and after receiving the corresponding command, the main control module 3 enters the corresponding interface to retrieve the stored corresponding temperature data, fit the corresponding temperature change curve, and control the corresponding curve to be displayed on the touch screen 6, thereby facilitating the overall preview of the temperature change of the system and enriching the use functions of the touch screen 6.
Specifically, the parameter setting unit 61 is configured to control the touch screen 6 to provide a password verification interface and a parameter setting interface according to the parameter setting instruction, so as to set the control parameter; the temperature viewing unit 62 comprises a plurality of temperature viewing selection subunits, and the temperature viewing selection subunits are used for controlling the touch screen 6 to provide temperature data with different time lengths according to the temperature viewing instruction; the humidity checking unit 63 includes a plurality of humidity checking and selecting subunits, and the humidity checking and selecting subunits are used for checking the instructions according to the humidity and controlling the touch screen 6 to provide humidity data with different durations. Thereby being more convenient for man-machine interaction.
In an embodiment, the touch screen 6 may be a liquid crystal touch screen, and the size of the touch screen may be selected according to the requirement of the temperature monitoring system, which is not limited herein. And can also set up the observation window outside touch-sensitive screen 6, open the observation window and can show and set up the operation through touch-sensitive screen 6 when the operation, avoid touch-sensitive screen 6 to take place wearing and tearing.
The following exemplifies the functions of the touch screen 6 according to the embodiment of the present invention, and the following description is specific.
Data communication is carried out between the touch screen 6 and the main control module 3 through an RS232 interface, and the main control module 3 receives data or commands sent by the touch screen 6 in an interrupt mode. After the temperature monitoring system 10 is powered on, the touch screen 6 can directly enter the main interface, the main interface directly displays current temperature and humidity data, namely the ambient temperature value acquired by the current temperature sensor 21, besides the direct display of the specific temperature and humidity data, the main interface is also provided with a parameter setting unit 61, a temperature checking unit 62 and a humidity checking unit 63 through the command data interaction with the main control module 3, and the three control interfaces can be controlled to enter by three keys of the main interface.
After clicking the button of the temperature check unit 62, the control interface of the temperature change display is entered, the interface includes a plurality of next-level display control buttons, namely, a plurality of temperature check selection subunits, and further, in response to the temperature check instruction, temperature data with different durations can be provided, for example, four temperature change curve displays with different durations can be set, namely, a current temperature change curve, a temperature change curve in a last hour, a temperature change curve in a last six hours and a temperature change curve in a last twelve hours, and the temperature change curve display interface with corresponding duration can be entered by clicking different buttons, so that the temperature change trend of the environment in the equipment can be observed at any time, and whether the temperature is stable within a certain time can be judged.
After clicking the button of the humidity checking unit 63, the control interface for displaying the humidity change is entered, the interface comprises a plurality of next-level display control buttons, namely, a plurality of humidity checking selection subunits, and further, responding to the humidity checking instruction, humidity data with different time lengths can be provided, for example, the humidity change curves with four different time lengths can be set to display, namely, the current humidity change curve, the humidity change curve in the last hour, the humidity change curve in the last six hours and the humidity change curve in the last twelve hours, the humidity change curves with different time lengths can be displayed by entering the interface after clicking different buttons, and therefore the humidity change trend of the environment where the equipment is located can be observed at any time.
After clicking the button of the parameter setting unit 61, the user enters a parameter setting interface of the temperature monitoring system 10, and the interface is provided with a system parameter setting authority, that is, the user can enter the system after being verified by a password verification interface, for example, the user can use a three-digit password to realize the system. The temperature monitoring system is initially provided with an initial password, the password can be modified according to the requirements of an operator, the operator enters a parameter setting interface by inputting the password, so that the condition that the stability of equipment is influenced due to the fact that control parameters of the temperature monitoring system 10 are randomly changed is avoided, and after the correct password is input and enters the parameter setting interface, three next-level control buttons are displayed, namely a system password modification interface, a system PID parameter setting interface and a system communication parameter setting interface respectively, and corresponding buttons are clicked to enter the corresponding parameter interfaces. If the key is clicked to enter a system password modification interface, the system can require to input the original password twice and input the new password once, the set new password can be validated only if the original passwords input twice are consistent, the storage button is clicked to successfully modify and quit, and if the original passwords input twice are inconsistent, the system can remind of re-inputting, continue to modify or abandon password modification and click the quit button. If a key is clicked to enter a system PID parameter setting interface, after the key enters the interface, the system can automatically read the current PID control parameter and display the current PID control parameter on the control interface, target control temperature setting, proportional coefficient setting, integral coefficient setting and differential coefficient setting can be carried out on the interface, corresponding data is input, a storage key is clicked to modify the corresponding parameter, meanwhile, a data additional storage key can be clicked to enter a PID parameter storage interface on the interface, the PID parameter storage interface is provided with 10 sets of PID data storage interfaces, and the PID control parameter can be stored in an EEPROM storage unit 81 of a data storage module 8 by clicking the corresponding key for subsequent calling, wherein a plurality of channels can be reserved on the PID parameter storage interface, and parameter storage can be completed by clicking any one of the channels; and the reading key can be clicked to enter a PID parameter reading interface, and the previously stored PID parameters can be read from the EEPROM storage unit 81 by clicking the corresponding key, so that the early debugging of the temperature monitoring system 10 is completed, wherein the PID parameter reading interface is also provided with a plurality of selectable channels, the parameters can be read to the display interface by clicking any one of the selectable channels, and the parameter updating of the PID algorithm can be completed by clicking the saving key. If the key is clicked to enter the system communication parameter setting interface, after the key enters the interface, the system can automatically read the current communication configuration parameters, and click corresponding parameters to modify, for example, the modified parameters can include parameters such as baud rate, data bit, check bit or stop bit, and after the modification, the system communication parameter modification setting can be carried out by clicking and storing, so that the system can be transplanted and used conveniently, and the universality of the system is improved.
In an embodiment, as shown in fig. 1, the temperature monitoring system 10 of the embodiment of the present invention further includes a status display module 7, which is connected to the main control module 3 and is configured to prompt the temperature range of the ambient temperature value with different colors.
In the embodiment, as shown in fig. 6, the status display module 7 includes a prompting lamp 71 and an alarm buzzer 72, and both the prompting lamp 71 and the alarm buzzer 72 are connected to the GPIO interface of the main control module 3 for data interaction. The alarm buzzer 72 can be used as an exception handling mechanism, when a module of the system is abnormal and effective temperature monitoring cannot be performed, the alarm buzzer 72 can send out alarm buzzing when the ambient temperature value exceeds a preset range, so that related operators are reminded to intervene, and the system is prevented from being in an abnormal state for a long time. And the indicator Light 71 may adopt a full-color LED (Light emitting diode), and reflect the range of the ambient temperature collected by the temperature sensor control module 2 in a color indication manner, so as to facilitate the rapid determination of whether the ambient temperature inside the device reaches the standard.
Specifically, when the ambient temperature value is in a first temperature range, the prompting lamp 71 prompts in a first color, and the alarm buzzer 72 gives an alarm; or when the ambient temperature value is in the second temperature range, the prompting lamp 71 prompts in a second color and the alarm buzzer 72 gives an alarm, or when the ambient temperature value is in the working temperature value range of the direct imaging device, the prompting lamp 71 prompts in a third color.
For example, the indicator light 71 is a full-color LED, pins of the LED are respectively connected in series with a current-limiting resistor, and then connected to GPIO pins of the main control module 3, and when the collected ambient temperature value is within a range of 22 ± 0.5 ℃, the main control module 3 controls a green light of the full-color LED to be turned on, indicating that the device operates within a set temperature range; when the collected ambient temperature value is higher than 22.5 ℃, the main control module 3 controls a red light of the full-color LED to be lightened, and controls the starting of the alarm buzzer 72 to prompt an operator that the temperature in the equipment is too high; when the collected ambient temperature value is less than 21.5 ℃, the main control module 3 controls the blue lamp of the full-color LED to be turned on, and controls the starting of the alarm buzzer 72 to prompt that the temperature inside the equipment is too low for an operator. If the alarm buzzer 72 is activated, it indicates that the temperature monitoring system 10 is abnormal, and cannot effectively control the ambient temperature of the equipment, and needs to perform manual intervention, and find out the reason, so that the equipment is restored to the normal use temperature range as soon as possible. And the state display module 7 is controlled and enabled by an upper computer.
In the embodiment, as shown in fig. 7, the communication module 4 in the embodiment of the present invention further includes a networking communication control interface 43, which is used to implement a communication connection for monitoring networking temperature of a plurality of direct imaging devices, and the networking communication control interface 43 may include one or more interfaces, so that a multi-branch communication link may be established, and a requirement for uniformly monitoring and processing environmental temperature data of different direct imaging devices is met. For example, the communication module 4 in fig. 7 may implement the requirement of simultaneously performing data communication on three different direct imaging devices by providing three networking communication control interfaces 43.
In the embodiment, the power supply module 1 includes a power supply circuit and a power supply reverse connection prevention circuit. The power supply circuit is connected with the main control module 3, mainly comprises an LDO low dropout regulator and a peripheral circuit thereof, and is used for supplying power to the temperature monitoring system 10 so as to ensure the normal operation of a circuit system; the power supply reverse connection preventing circuit is connected with the power supply circuit, is composed of an NMOS tube and a peripheral circuit thereof, and is used for closing the output of the power supply circuit when the power supply is reversely connected, so that the problem of circuit damage caused by the reverse connection of the anode and the cathode of the power supply is avoided.
For example, the power supply module 1 is composed of a power supply reverse connection prevention circuit and a power supply circuit. When the connector end is normally electrified, the NMOS tube is conducted, and the power supply circuit obtains normal power supply input; when the power supply at the end of the connector is reversely connected, the NMOS tube is cut off, and the power supply circuit cannot normally supply power, so that the power supply protection effect of the system is achieved. And the power supply circuit consists of an LDO chip and peripheral circuits thereof, the input voltage is 5V, the output voltage is 3.3V, and the power supply circuit supplies power for the system main control module and each functional module.
The operation of the temperature monitoring system 10 according to the embodiment of the present invention will be further illustrated with reference to fig. 8, and the detailed process is as follows. The first RS485 communication interface is a first communication control interface 41, and the second RS485 communication interface is a second communication control interface 42.
And step S1, after the system is powered on, initializing, mainly comprising liquid crystal display screen communication interface initialization, Flash initialization, state display interface initialization, temperature and humidity sensor interface initialization, RS485 communication module initialization, EEPROM initialization and system configuration parameter reading.
In step S2, it is determined whether the system initialization is completed. If yes, go to step S3; if not, go to step S1.
In step S3, the routine advances to the main loop.
And step S4, judging whether a second RS485 communication interface interrupt signal is detected. If yes, go to step S5, enter the communication interrupt handling subroutine; if not, go to step S13.
And step S5, judging whether the command is a Flash data reading command. If yes, go to step S6; if not, go to step S7.
And step S6, returning to the Flash storage data.
In step S7, it is determined whether the command is a system parameter configuration command. If yes, go to step S8; if not, go to step S9.
In step S8, PID parameter or communication parameter configuration is performed.
In step S9, it is determined whether or not the command is a status display enable command. If yes, go to step S10; if not, go to step S3.
In step S10, it is determined whether the temperature data is within the set range. If yes, go to step S12; if not, go to step S11.
In step S12, the control status display module lights the green LED lamp, and step S3 is executed.
And step S11, alarming by buzzer, and simultaneously lighting the red LED lamp or the blue LED lamp according to the temperature.
In step S13, it is determined whether a touch screen RS232 communication interrupt signal is detected. If yes, go to step S14, enter the touch screen interrupt handling subroutine; if not, go to step S20.
In step S14, it is determined whether or not the command is a temperature curve check command. If yes, go to step S15; if not, go to step S16.
And step S15, the main control module controls the touch screen to enter a temperature curve display interface.
In step S16, it is determined whether or not the command is a humidity curve check command. If yes, go to step S17; if not, go to step S18.
And step S17, the main control module controls the touch screen to enter a humidity curve display interface.
In step S18, it is determined whether or not the command is a system parameter setting command. If yes, go to step S19; if not, go to step S3.
And step S19, entering a system parameter setting interface, and modifying and configuring relevant parameters according to system requirements.
In step S20, the temperature and humidity data loop reading procedure is performed, and step S21 is executed.
And step S21, judging whether the temperature and humidity data reading is normal. If yes, go to step S22; if not, go to step S3.
And step S22, refreshing the temperature and humidity data display of the liquid crystal screen once.
And step S23, storing the collected temperature and humidity data into a Flash storage unit, and executing step S24.
And step S24, feeding back the temperature and humidity data to the upper computer through the second RS485 communication interface, storing the data by the upper computer after the data are received by the upper computer for later retrieval, and executing step S25.
And step S25, judging whether the temperature data sample capacity meets the requirement. If yes, go to step S26; if not, go to step S3.
And step S26, executing a temperature control algorithm, selecting rapid temperature regulation or variable speed integral PID algorithm regulation according to the actually collected temperature value, and executing step S27.
And step S27, judging whether a temperature adjusting command needs to be sent according to the calculation result. If yes, go to step S28; if not, go to step S3.
And step S28, sending a temperature adjusting instruction to the water cooling machine through the first RS485 communication interface, and executing step S29.
And step S29, adjusting the environmental temperature by matching with a temperature adjusting device, wherein the temperature adjusting device comprises an FFU (fan Filter units), a fan Filter unit, a condenser and the like, and finally returning to the step S3, wherein the steps are repeated in such a way, and the environmental temperature is controlled to be close to the target set temperature after a certain oscillation period, namely the environmental temperature value is controlled to be stabilized within the normal working range of the equipment.
In summary, the temperature monitoring system 10 for a direct imaging device according to the embodiment of the present invention is responsible for reading data collected by the temperature sensor control module 2 and adjusting ambient temperature in real time through the main control module 3, performing function control on other modules or performing data communication with other modules through various interfaces of the main control module 3 itself, and performing data command communication with the upper computer 9, and the embodiment of the present invention combines with the PID control algorithm and the temperature adjustment device 5, can accurately and quickly collect and process the temperature of the key mechanism inside the direct imaging device, can ensure that the device always performs exposure operation in an allowable temperature environment, and is simple in operation, and the temperature monitoring system 10 of the embodiment of the present invention has parameter setting, data reading, status display, and the like on the premise of satisfying the usage requirements, Additional functions such as data display and the like are combined with the networking communication control interface of the communication module 4, so that the basic temperature monitoring work of the direct imaging equipment can be met, the function re-expansion characteristic and the system portability are strong, the temperature regulation and control design can be completed by matching with an upper computer, an independent closed-loop temperature control system can be formed, and the temperature control requirements of different direct imaging equipment are met.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A temperature monitoring system for a direct imaging apparatus, the temperature monitoring system comprising:
a power supply module;
the temperature sensor control module comprises a temperature sensor and a sensor control interface, and the temperature sensor is used for acquiring an ambient temperature value of the direct imaging equipment;
the main control module is connected with the power supply module and the sensor control interface and used for outputting a temperature adjusting instruction when the environment temperature value is determined to exceed the working temperature value range of the direct imaging equipment;
the communication module comprises a first communication control interface, and one end of the first communication control interface is connected with the main control module;
and the temperature adjusting device is connected with the other end of the first communication control interface and used for receiving the temperature adjusting instruction and adjusting the environmental temperature value according to the temperature adjusting instruction.
2. The temperature monitoring system of claim 1, wherein the direct imaging device comprises a motion platform and a graphical imaging device, the temperature sensor comprising:
the first temperature acquisition module is arranged near the motion platform, connected with the main control module and used for acquiring a first environment temperature value;
and the second temperature acquisition module is arranged in the optical path optical engine cover of the image imaging device, is connected with the main control module and is used for acquiring a second environment temperature value.
3. The temperature monitoring system according to claim 1, further comprising a touch screen connected to the main control module, the touch screen being provided with a parameter setting unit, a temperature viewing unit, and a humidity viewing unit, wherein,
the parameter setting unit is used for controlling the touch screen to provide a password verification interface and a parameter setting interface according to a parameter setting instruction so as to set control parameters;
the temperature viewing unit comprises a plurality of temperature viewing selection subunits, and the temperature viewing selection subunits are used for controlling the touch screen to provide temperature data with different time lengths according to a temperature viewing instruction;
the humidity checking unit comprises a plurality of humidity checking and selecting subunits, and the humidity checking and selecting subunits are used for controlling the touch screen to provide humidity data with different durations according to a humidity checking instruction.
4. The temperature monitoring system of claim 1, further comprising:
and the state display module is connected with the main control module and is used for prompting the temperature range of the environmental temperature value in different colors.
5. The temperature control system of claim 4, wherein the status display module comprises:
the prompting lamp and the alarm buzzer are both connected with the main control module;
when the environment temperature value is in a first temperature range, the prompting lamp prompts in a first color, and the alarm buzzer gives an alarm; or, when the ambient temperature value is in the second temperature range, the prompting lamp prompts with a second color, and the alarm buzzer gives an alarm, or when the ambient temperature value is in the working temperature value range of the direct imaging device, the prompting lamp prompts with a third color.
6. The temperature monitoring system of claim 1, further comprising a data storage module connected to the master control module, the data storage module comprising:
the EEPROM storage unit is used for storing setting parameters and communication parameters;
and the Flash storage unit is used for storing the acquisition parameters of the temperature sensor.
7. The temperature monitoring system according to claim 6, wherein the communication module further comprises a second communication control interface, one end of the second communication control interface is connected with the main control module, and the other end of the second communication control interface is connected with an upper computer.
8. The temperature monitoring system of claim 1, wherein the communication module further comprises:
and the networking communication control interface is used for realizing the communication connection of the networking temperature monitoring of the plurality of direct imaging devices.
9. The temperature monitoring system of claim 1, wherein the power module comprises:
the power supply circuit is connected with the main control module and used for supplying power to the temperature monitoring system;
and the power supply reverse connection preventing circuit is connected with the power supply circuit and used for closing the output of the power supply circuit when the power supply is reversely connected.
10. The temperature monitoring system according to any one of claims 1 to 9, wherein the main control module, when outputting a temperature adjustment instruction to control the temperature adjustment device, is configured to control the temperature adjustment device according to an ambient temperature value and a set temperature value at which the direct imaging apparatus is located, so as to quickly adjust the ambient temperature to a target temperature range, and adjust the ambient temperature to the set temperature value in the target temperature range by using a PID algorithm.
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| CN202010357666.8A CN111550955A (en) | 2020-04-29 | 2020-04-29 | Temperature monitoring system |
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Application publication date: 20200818 |